S Hirose, T Iijima, I Adachi, K Adamczyk,
H Aihara… - Physical review …, 2017 - APS
We report the first measurement of the τ lepton polarization P τ (D*) in the decay B¯→ D* τ-
ν¯ τ as well as a new measurement of the ratio of the branching fractions R (D*)= B (B¯→ D …